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Firewall Basics

In this hands-on lab, you will learn the basics of firewalls, including core functionality and practical applications. You will practice writing, setting, and validating rules using the host-based iptables firewall on a Linux system.

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1
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beginner
difficulty
1
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Course Content

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Course Description

Upon completing this lab, you should be able to:

  • Define "firewall".
  • Describe the practical applications of a firewall.
  • Use iptables to restrict network traffic on a Linux host.
  • Use Nmap to validate a host-based firewall implementation.
This course is part of a Career Path:
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Instructed by

Senior Instructor
Joseph White
Provider
Cybrary Logo
Certification Body
Certificate of Completion

Complete this entire course to earn a Firewall Basics Certificate of Completion

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Purpose Statement

Cybrary Career Paths are comprehensive training programs designed to prepare you for the most in-demand roles in the cybersecurity workforce. Each path follows a Learn, Practice, Prove model and includes different activity types aligned to key topics within the path’s security domain. As you progress through the path, your progress will be measured in real time using Experience Points (XP) that serve as a comprehensive capability score for each topic. Upon completing all of the requirements for a path, you will be rewarded with a shareable digital badge via Credly.
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Overview

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Frequently Asked Questions
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What Will I Learn?
Foundations
Focused on the core IT competencies that cybersecurity professionals need to succeed in any career path.
Defensive Security
Focused on trying to find the bad guys. Topics such as threat intelligence, threat hunting, network monitoring, incident response. Defensive security is a reactive measure taken once a vulnerability is found through prevention, detection, and response.
Engineering and Operations
Focused on building and operating information systems.
Governance, Risk, and Compliance
Focused on the core IT competencies that cybersecurity professionals need to succeed in any career path.
Leadership and Management
Focused on program design and oversight. Covers project and program management.
Offensive Security
Focused on validating security controls by trying to break them (i.e. penetration testing or ethical hacking). Topics such as Kali Linux, metasploit, scanning, and privilege escalation. Offensive security seeks out the problem or vulnerability through ethical hacking and finds a solution to disable the operation.
Offensive Security
Focused on the core IT competencies that cybersecurity professionals need to succeed in any career path.
Path Outline

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Course Outline

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